Explosion-engine.



. PATENTED MAR. 6, 1906.

.11. HARTWIG. EXPLOSION ENGINE.' APPLICATION FILED 1123.26. 1904;.V

P` db Jdo Wim/55553 omeys- UNITED sTATEs PATENT oEEioE.

RUDOLF HARTWIG, OF R'TTTENSCHEID, NEAR ESSEN-ON-TlalE-RUHR,l GERMAN Y, ASSIGNOR TO FRIED. KRUPP, AKTIENGESELLSCHAFT, OF ESSEN-ON-THE-RUHR, GERMANY.

EXPLOSION-ENGINE.

Specification of Letters Patent.

Patented March e, 1906.

To all whom it muy concern:

Be it known that I, RUDOLF HARTWIG, a

subject of the German Emperor, and a resident of Rtte-nscheid, near Essen-on-the- Ruhr, Germany, `have invented certain new and useful Improvements in Explosion-Engines, of which the following is .a specification.

The present invention relates to means for altering the composition of air and gas in eX- plosion-'encrines, and particularly to means which regu oil' devices inserted in the pipes for gas and air and controlled by the governor. The connection between the governor and at least one of the cut-off devices is arranged in such a manner that the ratio' of transmission between the movement of the governor and.

themovement of the cut-0H device can be varied.

In the accompanying drawings, Figure 1 is a diagrammatical view showing an embodiwhich is rigidly connected to the inlet-valve D. The piston-valve E is provided with slots e" e2, which when the inlet-valve D is opened register with the slots c3 and c, leading to the chambers c and 02and permit the mixture to enter the explosive-chamber of the engine 1. f

ln each of the pipes A and B a throttlevalve F and G is inserted that is. automatically operated by the governor 2. The connection between the governor and the throttle-valves consists of a three-armed lever K, secured on a shaft H and having an arm c connected with the governor 2 by means of a rod L and double-armed lever L, pivoted to a swinging lever L2. The arms k2 7c3 oi: the lever 7c are by means of bolts m n linked to ate the power by means of cut-- Fig. 2 is a detail sectional'view o the the rods M N, thatby means of the arms f g en age the shafts of the throttle-valves F and The parts k2 M and the parts 7c3 N g thus form double ell-crank connections. The arms j and gare of the same length and disposed at .an angle of one hundred and ei hty degrees to each other, so that when t e lever k moves to one side or the other both throttle-valves will be rocked simultaneously vto open `or shut the pipes A and B. Each of the lever-arms k2 7c3 is provided with a slot f2 g2, curved in an arc that is concentric with the connection-point of the arm f g and the levers'M N. The bolts 'm' and n are adjustably seated in said slots.

When the inlet-valve D is closed, the slots c3 c4`are covered by the piston E and neither gas nor air can enter the mixing-chamber c5. At each suction-stroke the inlet-valve D is in the known manner opened wide by the valvegear, and, as before said, the slots e e2 of the piston E will then register with the slots c3 c, and if the throttle-valves are opened gas and air are drawn in. The amount of the mixture of gas and air is drawn in depends naturally upon the cross-sectional area of "the space leftopen by the throttle-valves in the pipes A and B, decreasingas they governor 2 rises and increasing as the governor falls. When the` overnoras the work required decreases reac es its highest position, the various parts of the device assume the position shown in the drawings, both throttle-valves being closed, and consequently no new charge can be drawn in. result of increased loading, it shifts the-lever 7c in the direction'of the arrow 9c, and opens both the throttles to the same extent more and more till when the governor is in its lowestt'position they are wlde open. lf the load or the Work required of the. engine does not varyythe governor does not move, and .consequently the throttles do not move either, so that the same amount of charge mixture is always drawn in. l

The composition ofthe char e mixture depends on the cross-sectiona area of the spaces left open by thethrottle-valves, and t e said area depends on the distance between the'bolts m fn/ and the turning shaft H of the lever K. On the drawings the bolts fm n are indicated as being at the same distance from the shaft H, and consequently When the governor Jfalls as a` IOO the movement of the lever-'arm 7c will be transmitted at the same ratio to the shafts of both throttle-valves F G by means of the doublevbell-crank leversv k2 M f and csN g. As therefore the movement of both double bell-crank levers and of the throttle-valves connected therewith in this instance is the same, the throttles will causo amounts of air and gas to pass through the two pipes A and B that have the same relative proportion for any position ofthe governor, and the composition will therefore be constant for any osition of the governor. In this specia instance, where the ratio of the effective lengths ofthe arms k2 and k3 is one to o ne, the charge ywill be composed of equal amounts of gas and air. If the heating power of the gas is altered, such as it may when blastffurnace gas or generator-gas is used, the composition must be varied, too, so asA to work under like favorable conditions. When such is the case, all that is necessary is to/suitably shift the bolt m or nf in the curved slots of the arm k2 or k3 so as to alter the effective length of one ofthe arms k2 7c3, thereby varying the ratio of transmission between the movement of the governor and that of the throttle-valves. The variation of the said ratio of transmission of course results in an alteration of the cross-sectional area of the s aces left open by the throttle-valves, tliereby changing the composition of the charge mixture. l is l icfore said, the curved slots lc2 lf3 are concentric with the connectionpoint of the levers M N with the arms f g,

respectively, and the throttle-valves willl therefore also in case that the bolts m n are located at unequal distance from the shaft H open simultaneously when the governor commences its downward movement and close simultaneously when the governor reaches its highest position. of the governor the two cut-oli devices do not open to the sam'eextent. Nevertheless. when the overnor assumes its lowest position they are oth opento their fullest extent for this adjustment.

As now by differentiating effective lengths of the arms k2 k3 the'bolts fm n', according to the arrangement illustrated are located ap roximatelydiametricallyoyf posite each otll arms k2 k3, being of different eective length,` the composition of gas and air will be a proximately constant for any position ofI t e gov- During the movement er the technical laws for the transmission of motion by means of link-4 gears will prove that also in the case of the ernor, Thus it will be seen that by means of the device described the composition of the charge can be regulated to agree with the heating power of the gas, and this regulation is effected in such a manner that during the entire working time of the engine the gas is utilized to the reatest extent possible.

In place og throttle-valves cocks, balancd valves, or slide-valves may of course be use Havingthus described my invention, what I claim is-- i 1. `The combination with an air-conduit, a gas-conduit, a pair of valves one for each conduit, and a governor, oi means connecting the valves and the governor to transmit motion simultaneously to said valves adjustable to vary the ratio of transmission from the gov-- ernorl as between the valves and maintaining such ratio in every position of the governor.

2. The combination with an air-conduit, a

gas-conduit, a pair of valves one for each conduit, and a governor, of a three-armed bellcrank lever one arm of which is connected to the governor and the other two each have connection with one of the valves, and means for varying the effective length of one of said latter ar'ms.

3. The combination with an air-conduit, a gasconduit, a pair of valves one for eacli conduit, and a governor, of a three-armed bell-crank lever, one arm of which is connected to the governor, and the other two are provided witli curved slots and connections between the valves and the two latter arms of the bell-crank, adjustable in said slots.

4. The combination with an air-conduit, a gas-conduit, a pair-of valves one for each conduit, and a governor, of athree-armed bell-crank lever one arm of which'is connected to the governor and the other two have connections each with one of the valves, and

means for varying the effective length of both of said latter arms.

5. The combination of two valves, one of the valves controlling the admission of air and the other of as or vapor, a part moved bythe governor, to such part, and means for altering the point of connection of one of the links. The foregoing specification signed-at Dsseldorf this 26th day. of January, 1904,

RUDOLF HARTWIG.

LIn presence of*I WILLIAM EssENwEiN,

PETER LIEBER.

inks connecting the valves ICO IOS 

